Facebook Bot that can use my own account to post in Page and Personal Inboxes

I've seen so many facebook bots for marketing and re-marketing, such as chatfuel, and similar services. But they all are limited to just auto replies, menus, and one-time re-marketing chats (and I guess this is due to FB Policies)

What I would need is a bot that ill give my own login info to so that it chats with people (facebook page, and even in the personal inbox), as me, and is not restricted.

What I intend to achieve are the following:

1. FB PAGE followups where customers that does not respond after a few days gets chatted up with followup messages until the say NOT INTERESTED. This is very important and we do this a lot manually and more often than not, customers appreciated our followups because they are reminded of the matter.
2. FB Personal INbox – Send images coming from an API, where if we post something on our website (images or links) the bot will send chat message alerting specific GROUP CHATs of the new content. FOR EXAMPLE, we have surveyors in the field and when they take pictures of project sites on our App, our App, through the FB BOT, will post the pictures on our Group Chat to let the engineers known of new site data.

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Is there such a bot/service/software?

If this needs to be developed, what is the approach? One programmer I spoke with mentioned just scripting for the browser where I would log into facebook using the web browser and the browser script will take over. Is this BROWSER scripting approach even possible and reliable?